In depth comparison and review of Sennheiser HD 4.40 and ASTRO A20. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Sennheiser HD 4.40 | ASTRO A20 |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headset - wireless | |
|---|---|---|---|
| Weight | - | 320 g | |
| Colour | - | Black, green | Navy, Call of Duty | Silver, Call of Duty | Black, blue | |
| Headband Material | - | Steel | |
| Recommended Use | - | Game console, computer | |
| Bluetooth Range (Operating Distance) | - | 9.14 m |
| SOUND QUALITY | Sennheiser HD 4.40 | ASTRO A20 |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.0 | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 4.40 offer a larger frequency range than ASTRO A20. |
| Total Harmonic Distortion (THD) | 0.5% | <3% | Sennheiser HD 4.40 have lower total harmonic distortion than Sennheiser HD 4.40. |
| Sensitivity | 113 dB | 100 dB | Sennheiser HD 4.40 have higher sensitivity than ASTRO A20. |
| Impedance | 18 Ohm | 32 Ohm | |
| Diaphragm | - | 40 mm | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sennheiser HD 4.40 | ASTRO A20 |
|---|
| Form Factor | Built-in | Headset microphone | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Audio Input Details | - | Uni-directional | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Sennheiser HD 4.40 | ASTRO A20 |
|---|
| Controls | - | Volume, power on/off |
|---|
| CABLE | Sennheiser HD 4.40 | ASTRO A20 |
|---|
| Cable Type | - | Micro-USB cable - detachable - 1 m Audio (optical) cable - detachable - 1 m Micro-USB cable - detachable - 50 cm |
|
|---|---|---|---|
| Cable Length | - | 1 m | |
| Detachable Cable | - | Yes |
| BATTERY AND CHARGING | Sennheiser HD 4.40 | ASTRO A20 |
|---|
| Battery Type | Headphone battery lithium polymer | Headset battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 15 hour(s) |
| OTHERS | Sennheiser HD 4.40 | ASTRO A20 |
|---|
| Included Accessories | - | Wireless transmitter | |
|---|---|---|---|
| Compatibility | - | Mac, Windows |
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